shader_recompiler: Improvements to array and cube handling. (#2083)

* shader_recompiler: Account for instruction array flag in image type.

* shader_recompiler: Check da flag for all mimg instructions.

* shader_recompiler: Convert cube images into 2D arrays.

* shader_recompiler: Move image resource functions into sharp type.

* shader_recompiler: Use native AMD cube instructions when possible.

* specialization: Fix buffer storage mistake.

src/shader_recompiler/backend/spirv/spirv_emit_context.h

@@ -222,6 +222,7 @@ public:
         Id sampled_type;
         Id pointer_type;
         Id image_type;
+        AmdGpu::ImageType bound_type;
         bool is_integer = false;
         bool is_storage = false;
     };